What is the cheapest airline that flies from San Juan to London?

JetBlue and Virgin Atlantic are the most popular carriers operating from San Juan to London

When did momondo last update prices for flights from San Juan to London?

Prices for flights from San Juan to London refresh daily.

How old do you have to be to fly from San Juan to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Juan to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£161 Cheap Flights from San Juan to London in 2025

Q: What is the typical price of a round-trip flight between San Juan and London?

Prices are currently low for flights on this route. Typical prices usually range from £475 to £615. The lowest price recently found on this route was £411.

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Find the cheapest flights from San Juan to London

Round-trip

One-way

Last minute

Cheap return flights

06:22 - 06:20SJU-LGW

18h 58m1 stop

13:00 - 17:54LGW-SJU

32h 54m1 stop

£411

Find Deal

Fri, 24 Oct - Thu, 30 Oct

06:22 - 06:20SJU-LGW

18h 58m1 stop

13:00 - 17:54LGW-SJU

32h 54m1 stop

£446

Find Deal

Sun, 12 Oct - Tue, 28 Oct

01:05 - 05:55SJU-LHR

23h 50m1 stop

06:50 - 23:36LHR-SJU

20h 46m2 stops

£470United Airlines

Find Deal

Sat, 11 Oct - Tue, 28 Oct

14:25 - 09:30SJU-LHR

14h 05m1 stop

08:15 - 16:55LHR-SJU

13h 40m1 stop

£480JetBlue

Find Deal

Mon, 22 Sep - Wed, 8 Oct

13:30 - 10:10SJU-LHR

15h 40m1 stop

07:40 - 20:00LHR-SJU

16h 20m1 stop

£480United Airlines

Find Deal

Sun, 12 Oct - Tue, 28 Oct

03:03 - 20:45SJU-LHR

12h 42m1 stop

08:15 - 16:57LHR-SJU

13h 42m1 stop

£483JetBlue

Find Deal

Sat, 11 Oct - Sun, 19 Oct

15:55 - 10:35SJU-LHR

13h 40m1 stop

06:15 - 18:30LHR-SJU

17h 15m1 stop

£492American Airlines

Find Deal

Mon, 22 Sep - Wed, 8 Oct

16:45 - 09:15SJU-LHR

12h 30m1 stop

06:05 - 19:55LHR-SJU

17h 50m1 stop

£493American Airlines

Find Deal

Wed, 29 Oct - Tue, 4 Nov

18:42 - 12:05SJU-LHR

13h 23m1 stop

11:15 - 23:56LHR-SJU

16h 41m1 stop

£505Iberia

Find Deal

Sun, 9 Nov - Thu, 20 Nov

18:42 - 12:05SJU-LHR

13h 23m1 stop

11:15 - 15:50LHR-SJU

32h 35m1 stop

£550Iberia

Find Deal

Mon, 1 Dec - Wed, 10 Dec

American Airlines flights from San Juan to London

Our best American Airlines deals on San Juan to London flight tickets

American Airlines

22 Sept

SJU15:55San Juan Luis Munoz Marin Intl

13h 40m

1 stop

LHR10:35London Heathrow

8 Oct

LHR06:15London Heathrow

17h 15m

1 stop

SJU18:30San Juan Luis Munoz Marin Intl

£492

Find similar

American Airlines

29 Oct

SJU16:45San Juan Luis Munoz Marin Intl

12h 30m

1 stop

LHR09:15London Heathrow

4 Nov

LHR06:05London Heathrow

17h 50m

1 stop

SJU19:55San Juan Luis Munoz Marin Intl

£493

Find similar

American Airlines

9 Nov

SJU06:00San Juan Luis Munoz Marin Intl

23h 00m

2 stops

LGW09:00London Gatwick

20 Nov

LGW11:20London Gatwick

26h 50m

2 stops

SJU10:10San Juan Luis Munoz Marin Intl

£495

Find similar

United Airlines flights from San Juan to London

Our best United Airlines deals on San Juan to London flight tickets

United Airlines

11 Oct

SJU01:05San Juan Luis Munoz Marin Intl

23h 50m

1 stop

LHR05:55London Heathrow

28 Oct

LHR06:50London Heathrow

20h 46m

2 stops

SJU23:36San Juan Luis Munoz Marin Intl

£470

Find similar

United Airlines

12 Oct

SJU13:30San Juan Luis Munoz Marin Intl

15h 40m

1 stop

LHR10:10London Heathrow

28 Oct

LHR07:40London Heathrow

16h 20m

1 stop

SJU20:00San Juan Luis Munoz Marin Intl

£480

Find similar

United Airlines

22 Sept

SJU14:55San Juan Luis Munoz Marin Intl

15h 40m

1 stop

LHR11:35London Heathrow

8 Oct

LHR06:50London Heathrow

22h 07m

2 stops

SJU23:57San Juan Luis Munoz Marin Intl

£485

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Fri 24/10

06:22-06:20

1 stop18h 58m

London Gatwick

Thu 30/10

13:00-17:54

1 stop32h 54m

£411

San JuanLondon

SJU - LGW

SJULGW

San Juan Luis Munoz Marin Intl

Sun 12/10

06:22-06:20

1 stop18h 58m

London Gatwick

Tue 28/10

13:00-17:54

1 stop32h 54m

£446

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 11/10

01:05-05:55

1 stop23h 50m

London Heathrow

Tue 28/10

06:50-23:36

2 stops20h 46m

£470

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 22/9

14:25-09:30

1 stop14h 05m

London Heathrow

Wed 8/10

08:15-16:55

1 stop13h 40m

£480

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 12/10

13:30-10:10

1 stop15h 40m

London Heathrow

Tue 28/10

07:40-20:00

1 stop16h 20m

£480

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sat 11/10

03:03-20:45

1 stop12h 42m

London Heathrow

Sun 19/10

08:15-16:57

1 stop13h 42m

£483

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 22/9

15:55-10:35

1 stop13h 40m

London Heathrow

Wed 8/10

06:15-18:30

1 stop17h 15m

£492

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Wed 29/10

16:45-09:15

1 stop12h 30m

London Heathrow

Tue 4/11

06:05-19:55

1 stop17h 50m

£493

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Sun 9/11

18:42-12:05

1 stop13h 23m

London Heathrow

Thu 20/11

11:15-23:56

1 stop16h 41m

£505

San JuanLondon

SJU - LHR

SJULHR

San Juan Luis Munoz Marin Intl

Mon 1/12

18:42-12:05

1 stop13h 23m

London Heathrow

Wed 10/12

11:15-15:50

1 stop32h 35m

£550

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from San Juan to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between San Juan and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from San Juan is in February. Flight prices, which tend to average around £494, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from San Juan averaging around £494.

What is the cheapest day to depart on your flight to London?

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £489. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from San Juan to London for around £783.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £489. Flights in the morning are often more expensive, with an average ticket price of £847.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from San Juan when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £611 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Juan for as low as £418 on momondo.

Cheap San Juan to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Juan to London

Direct flights	None

There are no direct flights from San Juan to London. There are no popular flight routes from San Juan to London.

Search flight deals

How far is San Juan to London by plane?
San Juan and London are 4196.4 mi apart from one another. Flights usually cover this in 12h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from San Juan to London?
Prices for flights from San Juan to London refresh daily.
How old do you have to be to fly from San Juan to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Juan to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Eastbourne

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Luton

Maidstone

Slough

Gatwick

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Worthing

Dartford

Chelmsford

Dover

Hounslow

Hayes

Folkestone

Stansted

Why use momondo?

Why should I use momondo to find a flight deal from San Juan to London?

It is quick and easy to find San Juan to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from San Juan to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from San Juan which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Juan to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Juan to London.

I’m not ready to book a flight from San Juan to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Juan to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.